Setup json metricset in module http

Elastic Stack Beats
1

Hello,
I use module http in metricbeat to get some values through an API.
The API return a json looking like that :

{
      "items" : [ {
        "timeSeries" : [ {
          "metadata" : {
            "metricName" : "allocated_vcores_cumulative",
            "startTime" : "2020-02-03T14:12:56.168Z",
            "endTime" : "2020-02-03T14:17:56.168Z",
            "attributes" : {
              "clusterName" : "cluster2",
            }
          },
          "data" : [ {
            "timestamp" : "2020-02-03T14:13:43.757Z",
            "value" : 549.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:14:43.757Z",
            "value" : 549.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:15:43.759Z",
            "value" : 374.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:16:43.760Z",
            "value" : 373.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:17:43.780Z",
            "value" : 373.0,
            "type" : "SAMPLE"
          } ]
        }, {
          "metadata" : {
            "metricName" : "available_vcores",
            "startTime" : "2020-02-03T14:12:56.168Z",
            "endTime" : "2020-02-03T14:17:56.168Z",
            "attributes" : {
              "clusterName" : "cluster2",
            }
          },
          "data" : [ {
            "timestamp" : "2020-02-03T14:13:43.757Z",
            "value" : 159.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:14:43.757Z",
            "value" : 159.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:15:43.759Z",
            "value" : 334.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:16:43.760Z",
            "value" : 335.0,
            "type" : "SAMPLE"
          }, {
            "timestamp" : "2020-02-03T14:17:43.780Z",
            "value" : 335.0,
            "type" : "SAMPLE"
          } ]
        } ],
        "warnings" : [ ]
      } ]
}

Here is my setup in metricbeat :

  - module: http
    enabled: true
    period: 5m
    hosts: ["http://cluster.api.priv:1234"]
    namespace: "api"
    path: "/api/timeseries"
    query:
      contentType: "application/json"
    json.is_array: false
    metricsets:
      - json

In Elasticsearch, i have a new field in the index "api.items" that contain the request result.
I can't set up a specific field that i want to store.
My wish is to store one document for each element in the array timeSeries with "metadata" and "data" fields.

2

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